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TO ALLVWHOM IT MAY CONCERN:

Be it known that I, F. PAINTER, of East Hampton, in the county of' Hampshire, and State of`Massachusetts, have invented `a new and improved Mode of Regulating a Positive Tension of Rubber Threads in Elastic- Fabric Looms; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use tbe same, reference being had to the accompanying drawing, forming part of this specification.

The drawing represents a loom having my improved tension-adjustment attached Y v This invention relates to a new and useful improvement in looms for weaving elastic fabrics of vulcanized rubber threads, and consists in an' arrangement of mechanical devices for stretching the rubber threads,.and holding them at a certain positive degree of tension while the fabric is Woven, ashereinafter more particularly described. l I

This mechanism is applicable to looms for weaving all kinds of'elastic rubber goods, but the drawing illustrates only my invention as applied to a loom. i A` A represent the framing of a loom, at one end of which are placed, as usual, the spools a a, which carry the rubber threads b tbe number and position of which depend on the number of webs and nature of the fabric to be woven. Over the spools a a is hung a feed-roll, B, which receives rubber threads from a threading and guide-plate, c, through-holes in which the threads pass in coming from the spools. And by the side of the feed-roll B is hung a tension-roll, C, that is borne against the feed-roll B to press upon the rubber threads b b as they pass between the two rolls into Vthe loom to form the' web to be woven, by the 'spiral springs dd. The threads pass also through a threading and g'uide-plate, c, after leaving the tension-roll C, passing from thence to a friction-roll, D, at the other end of the loom, over which roll they pass down to the take-up shaft E under a tension-roll, F, that bears the rubber threads against the shaft bymeans of spiral springs nl d. The take-up shaft E is actuated by the bevel-gear G at one end, connected by the shaft Hwith the'feed-roll B, by the bevel-gear G", Ato be operated thereby. The gear Gis made to run the takeup shaft E at a higher speed than the feed-roll B, in any required proportion to give the desired tension to the rubber threads b b and a rial for retainingr their hold on the threads firmly. On the end of the take-up shaft E, opposite the gear G, is-

placed a ratchet-wheel, e, provided with a spring-dog, g, to holdl the take-np, asusual, and a lever, 7L, is pivoted to the frame, carrying a pawl, 71:,t turn the ratchet and the take-up shaft for threading and adjusting the rubber warprbefore working the loom by power. l I

It will be apparent that the rubber threads are stretched and held positively to any degree of tension required by means of my improved gear connection between the fee'd-roll and the take-up shaft, while the web is woven so as to produce fabrics of any desired degree of elasticity.

Having described my invention, I claim as new, and desire to secure by Letters Patent- In looms for weaving elastic fabric, the construction and arrangement of the feed-roll B, receiving the rubber threads from the threading'and guide-plates c c', the adjustable tension-roll C,.bcaring against the feedroll B, and clamping the threads by means of the spiral springs d d, the friction-roll D, takeup shaft E, under tension while the web is being woven to produce fabrics of any desired elasticity, as herein shown and described.

FRANK PAINTER.

Witnesses:

GEO. S. CLARK, HUeo OBEREMPT. 

